Occult blood refers to small traces of blood that a person cannot see in their stool. The presence of blood in the stool could be a sign of an underlying condition. Health experts often use this test ...

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What Is a Fecal Occult Blood Test? The fecal occult blood test (FOBT) looks for the presence of blood in the feces, which may be a sign of a problem in your digestive system. The amount of blood in ...

About Your FOBT A FOBT is a lab test used to check your stool for occult blood. Occult blood is blood that you can’t see by looking at your stool. There are many reasons you may have blood in your ...